Blade-fastening.



PATENTED DEC. 31, 1907.-

N. 0. BASSETT. BLADE FASTENING. APPLICATION F ILED OUT. 29, 1906.RENEWED MAY 27, 1907.

wEssEs; INVENTOR f 1 Am v f ,5 JTTORNET. I

NORMAN O. BASSETT, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO ALLIS-CHALMERSCOMPANY,

OF MILWAUKEE, WISCONSIN, A CORPORATION OF NEW JERSEY.

I :sLAnn-snsrnnrnej Application filed October 29, 1906 Serial No.

Specification of Lett ers "intent.

Patented'fiec. 31, 1.907.

341.078. Renewed willy '27) 1907- Serial N0: 375.957-

To all whom it may concern:

Be it known that I, NORMAN C. BASSETT, a citizen of the United States,residing at Milwaukee, in the county of Milwaukee and State ofWisconsin, have invented certain new and useful Improvements inBlade-Fastenings, of which the following is a speciiication.

This invention relates to fastening devices suitable for fastening theblades of fluid propelled engines, or the blades of fans or pumps forpropelling fluid, and generally it relates to a fastening means which iscapable of being used in any relation where it is desirable to firmlysecure to a member-a plurality of similarly associated elements.

The term blade as used in this sped-- fication and in the claims is uscdin the generic sons.- to include any equivalent elements which itmight'be desirable to secure to a member in a similar manner and is notintended to restrict this invention to any specific art or machine, theterm blade being used for convenience as this invention is particularlywell suited for use in the construction of steam turbines. v

The purpose of this invention is to provide a simple, strong andreliable construc tion for the purpose described.

011 the drawings which accompany this specification and form a partthereof and on which the same reference characters are used to designatethe same elements wherever member which is provided with a projection 7adapted to be seated in the recess 3 of the blade-carrying member, saidblade-holding member being also provided with notches 8 within which areseated the blades 9, which blades are formed with projections 10 adapted to be received within recessed portions 11 of the blade-holdingmember adjacent the notches 8.

, The numeral 12 represents calking ieces which are adapted to be seatedwithin the recess 2 and hold the blade-holding member 6 and bladesfirmly within said recess. Each of these callring pieces, as illustratedby Fig.

1 of the drawing, are adapted to bear against two adjacent blades andoverlie the projections thereon, and when forced home in the ordinarymanner a portion of the ma terial forming the calking piece will beforced into the undercut portions 4 and 5 of a side of the recess 2,whereby the several parts'will be securely locked in position.

Nhat I claim is,

l. he combination with a blade-carrying member, provided with a recessthe sides of which are underciit, of a blade-holding member, providedwith notches and a projection seated in said recess with its projectionengaged with a side of the recess Within the undercut portion thereof,blades, provided with projections, seated in the notches of saidblade-holding member and ealking pieces to secure said blades and blade-holding member within the recess of said blade carrying memher, eachcalking piece being engaged with the projections on two adjacent bladesand also with the adjacent side of the recess of the blade-carryingmember within the undercut portion thereof.

2. The combination with a blade-carrying member, provided with a recessthe sides of which are undercut, of a blade-holding member, providedwith notches and a projection, seated in said recess with its projectionenes gaged with a side of said recess within the undercut ortionthereof, said bladediolding member emg recessed ad acent to saidnotches, blades, provided with projections, seated in said notches withtheir projections engaged with the blade-holding member within therecessed portions thereof and calking pieces to secure said blades andblade-holding-member Within the recess of said bladecarrying member,each calking piece being we engaged with the projections on two adjacentblades and also with the adjacent side of the recess of theblade-carrying member within the undercut portion thereof. v intestimolly-whereof, I a'liix my signature in the presence of twowitnesses.

NORMAN C. BASSETT. \Witnesses: W i

' FRANK E..DENNETT,

Joan ()LsnN.

